McGrath,

The whole basis of abortion rights is that embryos are not yet human beings and therefore have no rights separate from their parents' rights. If you argue that embryos are human beings, you argue that abortion is murder. This may be your position; I don't know, and of course that would be a whole different discussion. But in any case, such a decision would be a major shift in the law and therefore one that the courts would be very reluctant to undertake in either country; here it would undoubtedly lead to an attempt to overturn Roe V. Wade at the level of the Supreme Court.